3 Bedroom Apartments for Rent in St Marys, ON (39 Rentals)

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Renting with Roommates: Realistic Expectations for Shared Lease

Sharing a lease? Learn how to set clear expectations with your roommates on routines, bills, and cleaning to ensure a successful and peaceful shared living arrangement.

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The Dorchester
Rent Specials
$2,065 - $2,095
Total Monthly Price

Total Monthly Price

Base Rent
$1,280 - $2,095

Total Monthly Price
$1,280 - $2,095
3 Bedroom Apartments Contact Us For Availability

The Dorchester

1231 Richmond StLondon, ON N6A 3L9
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The Whitehall
Rent Specials
$1,935 - $2,145
Total Monthly Price

Total Monthly Price

Base Rent
$1,495 - $2,145

Total Monthly Price
$1,495 - $2,145
3 Bedroom Apartments Available Jun 1

The Whitehall

1265 Richmond StLondon, ON N6A 3M1
Pet Friendly
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Roommate Matching: Finding the Right Fit and Avoiding Pitfalls

When searching for a roommate, follow this list of essential steps and set clear expectations to create a solid foundation for a harmonious living situation.

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Parkdale Place
$1,9993 Bedroom Apartments Available Aug 1

Parkdale Place

1201 Richmond St NLondon, ON N6A 3L3
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property at 67 Karen Walk

$1,500

Total Monthly Price

Total Monthly Price

Base Rent
$1,500

Total Monthly Price
$1,500

3 Bedroom, 1 Bath Home for Rent

Available Now

67 Karen Walk

WaterlooONN2L 5X1
property at 520 Egerton St

$1,900

Total Monthly Price

Total Monthly Price

Base Rent
$1,900

Total Monthly Price
$1,900

3 Bedroom, 1 Bath Condo for Rent

Available Jun 15

520 Egerton St

LondonONN5W 3Z7
property at 77 Dalegrove Dr

$2,100

Total Monthly Price

Total Monthly Price

Base Rent
$2,100

Total Monthly Price
$2,100

3 Bedroom, 1 Bath Home for Rent

Available Now

77 Dalegrove Dr

KitchenerONN2M 2G6

Renting Smart: Lease Basics Every Renter Needs

Demystify Your Rental Lease. Learn the basics about renting, deposits, and tenant/landlord responsibilities. Rent smart and avoid surprises. | Renter University at ApartmentHomeLiving.com

property at 40 Marlboro Crt

$2,100

Total Monthly Price

Total Monthly Price

Base Rent
$2,100

Total Monthly Price
$2,100

3 Bedroom, 1.5 Bath Townhome for Rent

Available Jun 7

40 Marlboro Crt

WoodstockONN4S 8P4
property at 38 Langton Rd

$2,795

Total Monthly Price

Total Monthly Price

Base Rent
$2,795

Total Monthly Price
$2,795

3 Bedroom, 2 Bath Home for Rent

Available Now

38 Langton Rd

LondonONN5V 2L8
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520 Parkside Dr
$2,2253 Bedroom Apartments

520 Parkside Dr

520 Parkside DrWaterloo, ON N2L 4X7
  • Utilities Included
  • Smoke Free
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Kappele Circle
3 Bedroom Apartments

Kappele Circle

15-25 Kappele CirStratford, ON N5A 6X4
  • Utilities Included

The Art of the Rental Viewing: What to look for during a property tour

Touring a rental? This guide helps you know exactly what to look for, from safety features to hidden flaws, so you can confidently sign your lease or keep searching.

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Beacon Tower
3 Bedroom Apartments

Beacon Tower

25 Westmount RdWaterloo, ON N2L 5G7
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Sunnydale
3 Bedroom Apartments

Sunnydale

519-529 Sunnydale PlWaterloo, ON N2L 4S9
  • Utilities Included
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Aqui on King
3 Bedroom Apartments

Aqui on King

131 King StLondon, ON N6A 0E8
  • Utilities Included
  • Smoke Free

St Marys, ON Local Guide

Largest Available St Marys and Nearby 3 Bedroom Apartments

The largest available 3 Bedroom apartment unit in St Marys, ON is found at 180 Mill Street and is 1,962 square feet priced from $3,395. 190 Cherryhill Cir has the second largest 3 Bedroom, which is sized at 1,830 square feet and currently listed start at $2,799. Here is today’s list of the largest available 3 Bedroom units in St Marys:

Apartment ListingModel NameSquare FootagePriced From
180 Mill Street3 Bedroom + 3 Bath1,962 Sq Ft$3,395
190 Cherryhill CirThree Bedroom Pent House1,830 Sq Ft$2,799
100 Fullarton StreetEclipse1,606 Sq Ft$4,175
Beacon TowerThree Bedroom1,500 Sq Ft$2,450
Sunnydale3 Bedroom(s) and 1.5 Bathroom(s)1,500 Sq Ft$2,650
Alto Towers3 Beds, 1 Baths1,410 Sq Ft$3,495
675 Richmond Street3 Bedroom1,386 Sq Ft$2,844
Clarence Square3 Bed, 2 Bath - Dundas Penthouse1,374 Sq Ft$3,800
Revo on King StThree Bedroom1,265 Sq Ft$2,300
Richmond Square3 Bedroom(s), and 2 Bathroom1,000 Sq Ft$2,340

Cheapest Available St Marys and Nearby 3 Bedroom Apartments

As of May 30, 2026 the lowest priced 3 Bedroom apartment unit in St Marys, ON is the 3 Bedroom Model starting from $1,625 at Blossom Gate . The second most affordable St Marys 3 Bedroom is the 3 Bedroom Promotional Price For First 7 Months* Model at 939 Western starting at $1,842 . The average price for all 3 Bedroom apartments in St Marys is currently $2,607. Here is today’s list of the cheapest available 3 Bedroom options in St Marys:

Apartment ListingModel NamePriced From
Blossom Gate3 Bedroom$1,625
939 Western3 Bedroom Promotional Price For First 7 Months*$1,842
520 Parkside DrThree Bedroom Apartment$2,225
Revo on King StThree Bedroom$2,300
Richmond Square3 Bedroom(s), and 2 Bathroom$2,340
Beacon TowerThree Bedroom$2,450
Somerset Place Apartments3 Bed 1.5 Bath A$2,595
Sunnydale3 Bedroom(s) and 1.5 Bathroom(s)$2,650
180 Mill Street3 Bedroom + 2 Bath$2,695
SOHOSQ RentalsSO3B02$2,750

Real Estate and Rental Term Glossary | ApartmentHomeLiving.com Renter University

From the letter A all the way to the letter Z, the Real Estate and Rental Term Glossary from the content team at ApartmentHomeLiving.com provides our visitors and shoppers with a little clarity and helpful guidance in navigating the real estate world through definitions and explainers for the top subjects and terms that someone may come across during the leasing, buying, or selling process.

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Frequently Asked Questions about 3 Bedroom St Marys Apartments

What is the Cheapest apartment in St Marys with 3 Bedroom?

Currently the most affordable 3 Bedroom in St Marys is at Blossom Gate listed at $1,625.

How much is the average rent for a 3 Bedroom St Marys Apartment?

The average rent for a 3 Bedroom Apartment in St Marys is $2,607.

What is the largest available 3 Bedroom St Marys Apartment for rent?

Today's apartment with the most square footage in St Marys is a 1,962 square feet unit starting from $3,395 at 180 Mill Street.

What is the average size for St Marys 3 Bedroom Apartments for rent?

The average size for a 3 Bedroom rental in St Marys is currently 1,100 sq ft.

Expert Rental Resources

The rental experts at ApartmentHomeLiving.com provide you with top advice, tools, and tips for understanding the leasing process and finding the perfect rental. Here are a few helpful rental and leasing articles from our experts to guide you on your search.

Articles, How-To's, and Tips

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Neighborhood and Market Insights: How to Choose the Right Area to Rent

Written by: Robin Stewart

Apartment-hunting can be a gargantuan task. Renters have a wish list of items—some luxuries, some necessities—but finding what you seek in the right place is perhaps the most important part of the journey.

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A Seasoned Property Manager's Step-by-Step Guide to Getting Your Deposit Back

Written by: Lauren Harrington

I’m going to talk with you as a seasoned property manager and friend. So, let’s start with your security deposit. I want you to think about this guide as insider information. You deserve your deposit back.

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Expert Solutions for Creating the Perfect Work-From-Home Apartment Layouts

Written by: Lauren Harrington

This article is based on first-hand experience managing apartment communities and helping renters adapt to their spaces after moving in.

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What Does “Rent Burdened” Mean? How Much Rent Is Too Much

Written by: Lauren Harrington

This article draws from first-hand renter experiences and recurring financial challenges reported after moving in.